Multilayer element

Abstract

The present invention relates to a multilayer element (LE) and to a multilayer laminated glass layer element (GLE2), the use of the multilayer element (LE) and the multilayer laminated glass layer element (GLE2) for producing an article, an article comprising multilayer element (LE) or multilayer laminated glass layer element (GLE2), a layer element of at least two layers, the use of the polymer composition of the invention to produce a multilayer element (LE) or a multilayer laminated glass layer element (GLE2), as well as to a process for producing the multilayer element (LE) and an article thereof, as well as to a process for producing the multilayer laminated glass layer element (GLE2) and an article thereof.

The invention claimed is: 
     
       1. A multilayer element (LE), wherein the multilayer element (LE) comprises a first layer element, an interlayer element, and a second layer element, wherein
 the first layer element comprises a glass layer or a polymeric layer; 
 the interlayer element comprises a polymer composition comprising a copolymer (a) of ethylene and 1-octene, the copolymer (a) having
 (i) a density in a range of from 855 kg/m 3  to 875 kg/m 3  (measured according to ISO 1183) and 
 (ii) an MFR 2  in a range of from 0.1 to 20.0 g/10 min (measured according to ISO 1133 at 190° C. and a load of 2.16 kg), and 
 which copolymer (a) bears silane group(s) containing units (b) or unsaturated organic groups containing a carbonyl group (c) and 
 
 the second layer element comprises a glass layer element or a polymeric layer element; 
 and wherein the interlayer element is in adhering contact with said first and second layer element; 
 wherein the silane group(s) containing unit (b) is introduced into copolymer (a) by a grafting component (b′) which is a hydrolysable unsaturated silane compound represented by the formula (I):
   R 1 SiR 2   q Y 3−q    (I)
 
 
 wherein 
 R′ is an ethylenically unsaturated hydrocarbyl, hvdrocarbyloxy, or (meth)acryloxy hydrocarbyl group, 
 each R 2  is independently an aliphatic saturated hydrocarbyl group, 
 Y, which may be the same or different, is a hydrolysable organic group, and 
 q is 0, 1, or 2; 
 wherein the amount of the silane group(s) containing unit is of 0.1 to 2.0 wt %, and 
 wherein the interlayer element is a monolayer element consisting of the polymer composition of the interlayer element and/or the 
 multilayer element is transparent. 
 
     
     
       2. The multilayer element (LE) according to  claim 1 , wherein the first and the second layer element are rigid layer elements. 
     
     
       3. The multilayer element (LE) according to  claim 1 , wherein the copolymer (a) has an MFR 2  in the range of from 0.5 to 15.0 g/10 min and a melting temperature below 100° C. 
     
     
       4. The multilayer element (LE) according to  claim 1 , wherein the silane group(s) containing unit (b) is derived from a grafting component (b′) which is selected from vinyl trimethoxysilane or vinyl triethoxysilane. 
     
     
       5. A multilayer laminated glass layer element (GLE2) comprising a first glass layer element, an interlayer element, and a second glass layer element, in the given order, wherein
 the interlayer element comprises a polymer composition comprising a copolymer (a) of ethylene and 1-octene, which has been grafted with an acidic grafting agent (e), 
 the copolymer (a) before grafting having
 a density in a range of from 850 kg/m 3  to below 880 kg/m 3  (measured according to ISO 1183) and 
 an MFR 2  in a range of from 0.1 to 40.0 g/10 min (measured according to ISO 1133 at 190° C. and a load of 2.16 kg), and 
 
 wherein the interlayer element adheres to said first and second glass layer element, and 
 wherein interlayer element is a monolayer element consisting of the polymer composition of the interlayer element and/or the multilayer element is transparent. 
 
     
     
       6. The multilayer laminated glass layer element (GLE2) according to  claim 5 , wherein the copolymer (a) has an MFR 2  in the range of from 0.5 to 20.0 g/10 min and a melting temperature in a range of from 30° C. to below 100° C. 
     
     
       7. The multilayer laminated glass layer element (GLE2) according to  claim 5 , wherein the acidic grafting agent (e) is selected from acrylic acid, methacrylic acid, fiunaric acid, maleic acid, nadic acid, citraconic acid, itaconic acid, crotonic acid, and their anhydrides, metal salts, esters amides and imides. 
     
     
       8. The multilayer laminated glass layer element (GLE2) according to  claim 7 , wherein the acidic grafting agent (e) is maleic acid anhydride (MAH). 
     
     
       9. The multilayer laminated glass layer element (GLE2) according to  claim 5 , wherein the copolymer (a) is grafted with from 0.01 and 1.00 wt % of the acidic grafting agent (e).